LNJ authored Apr 09, 2018 and Linus Jahn committed Sep 15, 2018

The file stanza extension from Jingle File Upload is now also used for other
protocols as XEP-0385: Stateless Inline Media Sharing (SIMS). Unfortunately,
the original implementation was only usable in a full Jingle File Upload
request. Thus, this new implementation was required. It would be preferable that
this implementation is also used in the normal Jingle session, later.